The correct answer is a. Lpt.
LPS is lipopolysaccharide located in the outer membrane (OM) of the unique lipid bilayer ofGram-negative bacteria. Gram-negative bacteria containins Lpt or the lipopolysaccharide transport systems which is responsible for transporting LPS. It consists of seven known LPS transport proteins.
The waxy coating is a lipid that can help prevent excess water loss in dry environments.
Answer: D. a fertilized egg cell
Totipotent stem cells are cells which are formed when a sperm fertilizes a egg resulting in a zygote. A zygote being a totipotent stem cell divides many times to develop specialized cells in a new human being. Therefore, a fertilized egg cell has greatest number of totipotent stem cells.
1) pathogen enters body and releases chemoattractants
2) a phagocyte/macrophage is attracted by these chemicals
3) the phagocyte engulfs the pathogen using its pseudopodia
4) the membranes of both organisms fuse forming a phagosome
5) lysosomers in the phogocyte fuse with the phagosome, forming a phagolysosome
6) these enzymes digest the pahogen (hydrolyse the bonds)
7) the antigens of the pathogen are placed on the surface of the phagocyte making an APC (antigen presenting cell)
